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  <TITLE>-si (read data from stdin) switch</TITLE>
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<H1>-si (read data from stdin) switch</H1>

<P>Causes 7-Zip to read data from stdin (standard input) instead of from disc files.</P>

<H4>Syntax</H4>

<PRE class="syntax">
-si{file_name}
</PRE>

<DL>
  <DT>{file_name}</DT>
  <DD>Specifies a name that will be stored in the archive for the compressed data.
    If file_name is not specified, data will be stored without a name.</DD>
</DL>

<P>Note: The current version of 7-Zip support reading of archives from stdin only for xz, lzma, tar, gzip and bzip2 archives.</P>

<H4>Examples</H4>

<PRE class="example">
7z a archive.gz -tgzip -siDoc2.txt < Doc.txt
</PRE>

<P>compresses input stream from file Doc.txt to 
<SPAN class="filename">archive.gz</SPAN> archive
using <SPAN class="filename">Doc2.txt</SPAN> file name.</P>

<PRE class="example">
7z x 7z905.tar.gz -so | 7z x -si -ttar
</PRE>

<P>decompresses <SPAN class="filename">tar.gz</SPAN> archive.</P>

<H4>Commands that can be used with this switch</H4>

<P>
  <A href="../commands/add.htm">a (Add)</A>,
  <A href="../commands/extract.htm">e (Extract)</A>,
  <A href="../commands/hash.htm">h (Hash)</A>,
  <A href="../commands/update.htm">u (Update)</A>,
  <A href="../commands/extract_full.htm">x (Extract with full paths)</A>
</P>

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